Javascript 给定DataTable时,Google Charts draw()方法的类型错误
我试图使用HTML和Javascript在Google图表中显示带有范围过滤器的折线图,但每当我运行Javascript 给定DataTable时,Google Charts draw()方法的类型错误,javascript,datatable,google-api,google-visualization,Javascript,Datatable,Google Api,Google Visualization,我试图使用HTML和Javascript在Google图表中显示带有范围过滤器的折线图,但每当我运行draw()函数时,代码都会告诉我,我对draw()参数使用了错误的数据类型(它应该是DataTable)。但是,我使用arrayToDataTable()构建数据,根据GoogleCharts API,它创建了一个数据表。这是我的全部代码: <html> <head> <script type="text/javascript" src="h
draw()
函数时,代码都会告诉我,我对draw()
参数使用了错误的数据类型(它应该是DataTable
)。但是,我使用arrayToDataTable()
构建数据,根据GoogleCharts API,它创建了一个数据表。这是我的全部代码:
<html>
<head>
<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
//Chart data
google.charts.load('current',{'packages':['controls']});
google.charts.setOnLoadCallback(drawDashboard);
function drawDashboard(){
var dataSet = google.visualization.arrayToDataTable([
[{label:'date',type:'datetime'},{label:'Bytes from network:Bytes to network',type:'number'}],
[new Date(2016,01,23,00,00),1.0],
[new Date(2016,01,23,01,00),1.0075187969924813],
[new Date(2016,01,23,03,00),1.126865671641791],
[new Date(2016,01,24,22,00),0.987012987012987],
[new Date(2016,01,25,01,00),1.0],
[new Date(2016,01,25,02,00),0.9166666666666666],
[new Date(2016,01,25,10,00),1.0],
[new Date(2016,01,26,12,00),1.0],
[new Date(2016,01,27,17,00),0.9864864864864865],
[new Date(2016,01,28,22,00),0.03125],
[new Date(2016,02,01,22,00),0.97],
]);
var dashboard = new google.visualization.Dashboard(document.getElementById('dashboard_div'));
var dateRangeFilter = new google.visualization.ControlWrapper({'controlType':'ChartRangeFilter','containerId':'filter_div','options': {'filterColumnLabel':'date'}});
var lineChart = new google.visualization.ChartWrapper({'chartType':'LineChart','containerId':'curve_chart','options':{'title': 'Total Bytes from the Source Network to Total Bytes To the Source Network per Day','curveType': 'function','legend': {'postition':'bottom'}}});
dashboard.bind(dateRangeFilter,lineChart);
dashboard.draw(dataSet);
}
</script>
</head>
<body>
<!--draw charts using corresponding div tags-->
<div id="dashboard_div">
<div id="filter_div"></div>
<div id="curve_chart" style="width:900px;height:500px"></div>
</div>
</body>
</html>
我不确定它为什么抛出这个错误,因为
dataSet
显然是DataTable
类的一个实例。我多次尝试清除缓存和Cookie,但均无效。尝试删除对http://www.google.com/jsapi
您应该只需要loader.js
我还发现,在使用loader.js
时,除了“控件”
google.charts.load('current'{
包:['controls','corechart'],
回调:drawDashboard
});
函数drawDashboard(){
var dataSet=google.visualization.arrayToDataTable([
[{label:'date',type:'datetime'},{label:'Bytes from network:Bytes to network',type:'number'}],
[新日期(2016,01,23,00,00),1.0],
[新日期(2016,01,23,01,00),1.0075187969924813],
[新日期(2016,01,23,03,00),1.126865671641791],
[新日期(2016,01,24,22,00),0.987012987012987],
[新日期(2016,01,25,01,00),1.0],
[新日期(2016,01,25,02,00),0.916666],
[新日期(2016,01,25,10,00),1.0],
[新日期(2016,01,26,12,00),1.0],
[新日期(2016,01,27,17,00),0.9864864864864865],
[新日期(2016,01,28,22,00),0.03125],
[新日期(2016,02,01,22,00),0.97],
]);
var dashboard=newgoogle.visualization.dashboard(document.getElementById('dashboard_div'));
var dateRangeFilter=new google.visualization.ControlWrapper({'controlType':'ChartRangeFilter','containerId':'filter_div','options':{'filterColumnLabel':'date'});
var lineChart=new google.visualization.ChartWrapper({'chartType':'lineChart','containerId':'curve_chart','options':{'title':'Total Bytes from Source Network to Total Bytes to the Source Network Day','curveType':'function','legend':{'position':'bottom});
dashboard.bind(dateRangeFilter、lineChart);
dashboard.draw(数据集);
}
根据谷歌图表的示例页面(以及我看到的大多数其他页面),您只需要导入控件
包。这是一个新的变更,也需要corechart
包吗?如果只包含控件
,则会出现一个错误,说明google.load不是一个函数
。我发现单独使用jsapi
时,只需要'controls'
,而loader.js
则不需要。显然,最近发布了一个有缺陷的版本-->--删除了“jsapi”大大提高了谷歌图表对我的可靠性。
You called the draw() method with the wrong type of data rather than a DataTable or DataView